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-3x-2x=-10
-5x=-10 /:(-5)
x=2
2x-2=7-x
2x+x=7+2
3x=9 /:3
x=3
10=4-2x
2x=4-10
2x=-6/:2
x=-3
w razie jakichkolwiek wątpliwości, pisz na prv :)
0=5x-10 /+10
10=5x /:5
x=2
2x-2=7-x /+x
3x-2=7 /+2
3x=9 /:3
x=3
10=4-2x /-4
6=-2x /:(-2)
x=-3
pozdr:)